Beth wears a P.O.W.- M.I.A. Bracelet with Al's name on it. In the late 60's to the end of the Vietnam War, Americans wore these bracelets in unity with the P.O.W's and M.I.A's and gave them to the Prisoners Of War when they returned home to show their support for that serviceman.
The exterior shots of the San Diego Police Department's station is footage from the television series Simon & Simon (1981).
In the credits it states that the stock photo of Dean Stockwell (the framed pic of Al in Beth's house) was provided by fellow actor Roddy McDowall
This episode ends without showing Sam leaping.
This episode reveals that Al's surname is Calavicci.